Device for reversing the direction of flow of a fluid at the lev

Details Device for reversing the direction of flow of a fluid at the lev Device for reversing the direction of flow of a fluid at the lev

1979-08-28

1982-05-25

Pate, III, William F.

Boring or penetrating the earth

With means movable relative to tool or shaft to control...

175243, 175322, E21B 2100

Patent

active

043312071

ABSTRACT:
This device, positioned above the drill bit, comprises a body provided with an axial bore communicating with the drill string and distribution means, controlling the direction of flow of the flushing fluid, slidably mounted in said bore and having two positions. This distribution means can be shifted from a first to a second position and vice-versa by a succession of fluid supply periods separated by periods of interruption of the fluid supply.

REFERENCES:
patent: 1619328 (1927-03-01), Benckenstein
patent: 2805043 (1957-09-01), Williams, Jr.
patent: 3365007 (1968-01-01), Skipper
patent: 3410355 (1968-11-01), Garrett
patent: 3743035 (1973-07-01), Tiraspolsky

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